Source : Webster's Revised Unabridged Dictionary (1913)

Dissunder \Dis*sun"der\, v. t. [imp. & p. p. {Dissundered}; p.
   pr. & vb. n. {Dissundering}.] [Pref. dis- (intens) + sunder.]
   To separate; to sunder; to destroy. [R.] --Chapman.